Building material.



L1, SCHRO'DER.

BUILDING MATEmAL.

APPLICATION FlLEDIAN. 21, 1914.

y 1,218,217. A' y rPatented Man-6, 1917.

EDWARD J'. SCHRODER, 0F CHICAGO, ILLINOIS.

BUILDING MATERIAL.

Specification of Letters Patent.

Patented Mar.l6, 1917.

Application led January 21, 1914. Serial N o. 813,394.

To all 'wkom z't may concern:

Be it known that'I, EDWARD J. SCHRODER, a citizen of the United States,residing at Chicago, in the county of Cook and State of Illinois, have invented certain new and useful Improvements in Building Material, of which the following is a specification.

Although asbestos paper is used to some extent as a surfacing for prepared roofing, it is but poorly adapted to withstand the eli'ects' of the weather. Asbestos paper is very `soft and absorbent, and when wet its fibers may be readily scutfed off, hence ythose fibers which are not held in place by reason of adhesion to the asphalt contained In the roofing are loosened and removed by the elements in a comparatively short time.

' One of the objects of this invention is to render asbestos paper Waterproof and' to bind together the bers thereof, thus adapting the paper to withstand the eects of exposure to the weather.

Another object is to accomplish the Waterproofing of asbestos paper without the use of asphalt or other dark-colored substances, in order that the surface of the paper. shall present a light or approximately white -ground capable of having colors and designs imprinted thereon.

It will be apparent that a sheet of asbestos paper treated as hereinbefore suggested is well 'adapted for use as the outer covering of building material other than rooting, as,

for example, wall-board and siding.

I have found that an oil, either oxidized or capable of oxidation in contact with air, dissolved in a suitable solvent, constitutes a satisfactory material for waterproofing asbestos paper. The oil may be what is known as a prepared oil, or what is termed a drying oil, such as linseed oil, poppyseed oil, menhaden oil, tung oil (Chinese wood oil), etc. If desired, rubber or a rubber substitute may be used in combination with the oil. The solvent maybe naphtha, benzin or other suitable material.

After saturation in a Waterproofing solu-` tion su'ch as just described, asbestos paper acquires a Waterproof, hard, wear-resisting surface, and possesses a greater degree of rigidity than the untreated paper. The.

color of the treated. paper is somewhat darker than that of the unwaterproofed paper, but-is still suiiioiently light to per-y mit of colors ordesigns being applied thereto. If the sheet is to be given a solid -sheet either before or after the color, the coloring material may be mixed with the waterproofing solution, or it may be applied to the sheet after the latter has been waterproofed. If it is desired to place upon the sheet a design simulating shingles, tiles, or slate, or any other arrangement of forms or colors (a few examples of which are indicated in Fig. 3), such design or arrangement may be imprinted upon the been Waterproofed.

When the asbestos sheet is to be used as the protective coating of prepared roofing, the waterproofing solution may, if desired, be applied after the sheet has been united with the body ofthe roofing, but it is preferred to waterproof the asbestos sheet prior to application of the sheet to the roofing body.

The Waterproofedfasbestos paper consti-nv tutes an article of manufacture which may be applied to various uses. For example, it may be employed as the outer layer orlayers of a composite Wall-board or siding, the body of the. board consisting of suitable material such as an asphalt cement mixed with binding material, such as asbestos fiber, clay,

sawdust, Wood fiber, stone dust, sand, etc.

sheet has The composite sheet just described may be used in the manufacture of shingles, the sheet being formed of any suitable thickness, and made tapering, if desired.

In the accompanying drawing, Figure 1 is a cross-sectional View of a composite roofing or board embodying my invention. Fig. 2 is a face view of` a4 sheet of asbestos paper waterproofed in accordance with my invention. Fig. 3 illustrates three different designs or arrangements of lines and colors 1 which may be imprinted upon the sheet.v

1 denotes the sheets of asbestos paper and 2 an intermediate layer of suitable material such as that herein described.l

When the word rubber is used in the following claims it is to be understood asv ifying not only indiarubber but alsosi ru ber substitutes or rubberlike bodies.

I claim as my invention:

1. An improvedl building material com- I, prising a waterproof sheet of asbestos paperA the fibers of Which are bound together by anl sisting of non-asphaltic oxidizable oil in al volatile solvent. v

3. A sheet of asbestos paper Waterprooted by saturation With a. solution of an oxidiz- 10 able oil and rubber.

f4. An improved 'building material comprising a Waterproof sheet oi' asbestos paper the fibers of'which are bound together by an oxidized oil. incorporated therein, said sheet having a hard Waterproof surface, L5 provided With a design printed thereon.

ln testimony whereof l aHiX my signature in the presence of two Witnesses.

EDWARD J. SCHRODER. `Witnesses:

CHARLES W. HILLS, Jr., \GE0RGE L. CHINDAHL. 

